Which services are NOT included in the Pharmacy Benefit Manager's clinical services?

The correct answer is C, as Internal Revenue Management is not a clinical service offered by Pharmacy Benefit Managers (PBMs). PBMs typically focus on managing and improving the cost-effectiveness and accessibility of pharmaceuticals while ensuring quality patient care.

Claims Adjudication involves processing and paying claims for prescription medications, a core function of PBMs aimed at facilitating the fulfillment of prescriptions. Utilization Management includes strategies like prior authorization and step therapy to ensure that prescribed medications are appropriate and cost-effective, indicating its relevance to clinical oversight. Disease Management is designed to optimize clinical outcomes for chronic conditions through comprehensive patient care, further reinforcing PBMs' role in enhancing patient health through targeted interventions.

In contrast, Internal Revenue Management pertains to the financial aspects of an organization rather than its clinical services. This function relates more to accounting and financial control rather than the management of medications or patient care services, and thus is excluded from the clinical services offered by PBMs.